In the real world the nearest binary BD we know of is Luh-16
(a.k.a. WISE J104915.57\(-\) 531906.1), located at about 2 pc
from the Sun [1]}, but the effective
temperatures of both its components place them well above the
liquid water regimen. Much closer analog of the fictional
Infra Draconis is the BD WISE J085510.83\(-\) 071442.5 (often
abbreviated to W0855) – as far as we know, a single object –
with an effective temperature \(\sim \) 250 K (close to \(-\) 20 C)
at a distance of 2.2 pc from the Sun
[2]}, [3]}. It is probably
3–10 times more massive than Jupiter and its age range is
poorly constrained – it may lay anywhere between 1 and 10 Gyr.
